Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4688708 | Bursting machine | Robert Irvine, Frank T. Roetter, Harold Silverman | 1987-08-25 |
| 4548400 | Inserter gauging system | Dean H. Foster, Harold Silverman | 1985-10-22 |
| 4418515 | Inserter gauging system | Dean H. Foster, Harold Silverman | 1983-12-06 |